* Type 1 and Type 2 protection use the same format: 16 bit guard tag,
* 16 bit app tag, 32 bit reference tag.
*/
-static void sd_dif_type1_generate(struct blk_integrity_exchg *bix, csum_fn *fn)
+static void sd_dif_type1_generate(struct blk_integrity_iter *iter, csum_fn *fn)
{
- void *buf = bix->data_buf;
- struct sd_dif_tuple *sdt = bix->prot_buf;
- sector_t sector = bix->sector;
+ void *buf = iter->data_buf;
+ struct sd_dif_tuple *sdt = iter->prot_buf;
+ sector_t seed = iter->seed;
unsigned int i;
- for (i = 0 ; i < bix->data_size ; i += bix->sector_size, sdt++) {
- sdt->guard_tag = fn(buf, bix->sector_size);
- sdt->ref_tag = cpu_to_be32(sector & 0xffffffff);
+ for (i = 0 ; i < iter->data_size ; i += iter->interval, sdt++) {
+ sdt->guard_tag = fn(buf, iter->interval);
+ sdt->ref_tag = cpu_to_be32(seed & 0xffffffff);
sdt->app_tag = 0;
- buf += bix->sector_size;
- sector++;
+ buf += iter->interval;
+ seed++;
}
}
-static void sd_dif_type1_generate_crc(struct blk_integrity_exchg *bix)
+static int sd_dif_type1_generate_crc(struct blk_integrity_iter *iter)
{
- sd_dif_type1_generate(bix, sd_dif_crc_fn);
+ sd_dif_type1_generate(iter, sd_dif_crc_fn);
+ return 0;
}
-static void sd_dif_type1_generate_ip(struct blk_integrity_exchg *bix)
+static int sd_dif_type1_generate_ip(struct blk_integrity_iter *iter)
{
- sd_dif_type1_generate(bix, sd_dif_ip_fn);
+ sd_dif_type1_generate(iter, sd_dif_ip_fn);
+ return 0;
}
-static int sd_dif_type1_verify(struct blk_integrity_exchg *bix, csum_fn *fn)
+static int sd_dif_type1_verify(struct blk_integrity_iter *iter, csum_fn *fn)
{
- void *buf = bix->data_buf;
- struct sd_dif_tuple *sdt = bix->prot_buf;
- sector_t sector = bix->sector;
+ void *buf = iter->data_buf;
+ struct sd_dif_tuple *sdt = iter->prot_buf;
+ sector_t seed = iter->seed;
unsigned int i;
__u16 csum;
- for (i = 0 ; i < bix->data_size ; i += bix->sector_size, sdt++) {
+ for (i = 0 ; i < iter->data_size ; i += iter->interval, sdt++) {
/* Unwritten sectors */
if (sdt->app_tag == 0xffff)
return 0;
- if (be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) {
+ if (be32_to_cpu(sdt->ref_tag) != (seed & 0xffffffff)) {
printk(KERN_ERR
"%s: ref tag error on sector %lu (rcvd %u)\n",
- bix->disk_name, (unsigned long)sector,
+ iter->disk_name, (unsigned long)seed,
be32_to_cpu(sdt->ref_tag));
return -EIO;
}
- csum = fn(buf, bix->sector_size);
+ csum = fn(buf, iter->interval);
if (sdt->guard_tag != csum) {
printk(KERN_ERR "%s: guard tag error on sector %lu " \
- "(rcvd %04x, data %04x)\n", bix->disk_name,
- (unsigned long)sector,
+ "(rcvd %04x, data %04x)\n", iter->disk_name,
+ (unsigned long)seed,
be16_to_cpu(sdt->guard_tag), be16_to_cpu(csum));
return -EIO;
}
- buf += bix->sector_size;
- sector++;
+ buf += iter->interval;
+ seed++;
}
return 0;
}
-static int sd_dif_type1_verify_crc(struct blk_integrity_exchg *bix)
-{
- return sd_dif_type1_verify(bix, sd_dif_crc_fn);
-}
-
-static int sd_dif_type1_verify_ip(struct blk_integrity_exchg *bix)
-{
- return sd_dif_type1_verify(bix, sd_dif_ip_fn);
-}
-
-/*
- * Functions for interleaving and deinterleaving application tags
- */
-static void sd_dif_type1_set_tag(void *prot, void *tag_buf, unsigned int sectors)
+static int sd_dif_type1_verify_crc(struct blk_integrity_iter *iter)
{
- struct sd_dif_tuple *sdt = prot;
- u8 *tag = tag_buf;
- unsigned int i, j;
-
- for (i = 0, j = 0 ; i < sectors ; i++, j += 2, sdt++) {
- sdt->app_tag = tag[j] << 8 | tag[j+1];
- BUG_ON(sdt->app_tag == 0xffff);
- }
+ return sd_dif_type1_verify(iter, sd_dif_crc_fn);
}
-static void sd_dif_type1_get_tag(void *prot, void *tag_buf, unsigned int sectors)
+static int sd_dif_type1_verify_ip(struct blk_integrity_iter *iter)
{
- struct sd_dif_tuple *sdt = prot;
- u8 *tag = tag_buf;
- unsigned int i, j;
-
- for (i = 0, j = 0 ; i < sectors ; i++, j += 2, sdt++) {
- tag[j] = (sdt->app_tag & 0xff00) >> 8;
- tag[j+1] = sdt->app_tag & 0xff;
- }
+ return sd_dif_type1_verify(iter, sd_dif_ip_fn);
}
static struct blk_integrity dif_type1_integrity_crc = {
.name = "T10-DIF-TYPE1-CRC",
.generate_fn = sd_dif_type1_generate_crc,
.verify_fn = sd_dif_type1_verify_crc,
- .get_tag_fn = sd_dif_type1_get_tag,
- .set_tag_fn = sd_dif_type1_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};
.name = "T10-DIF-TYPE1-IP",
.generate_fn = sd_dif_type1_generate_ip,
.verify_fn = sd_dif_type1_verify_ip,
- .get_tag_fn = sd_dif_type1_get_tag,
- .set_tag_fn = sd_dif_type1_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};
* Type 3 protection has a 16-bit guard tag and 16 + 32 bits of opaque
* tag space.
*/
-static void sd_dif_type3_generate(struct blk_integrity_exchg *bix, csum_fn *fn)
+static void sd_dif_type3_generate(struct blk_integrity_iter *iter, csum_fn *fn)
{
- void *buf = bix->data_buf;
- struct sd_dif_tuple *sdt = bix->prot_buf;
+ void *buf = iter->data_buf;
+ struct sd_dif_tuple *sdt = iter->prot_buf;
unsigned int i;
- for (i = 0 ; i < bix->data_size ; i += bix->sector_size, sdt++) {
- sdt->guard_tag = fn(buf, bix->sector_size);
+ for (i = 0 ; i < iter->data_size ; i += iter->interval, sdt++) {
+ sdt->guard_tag = fn(buf, iter->interval);
sdt->ref_tag = 0;
sdt->app_tag = 0;
- buf += bix->sector_size;
+ buf += iter->interval;
}
}
-static void sd_dif_type3_generate_crc(struct blk_integrity_exchg *bix)
+static int sd_dif_type3_generate_crc(struct blk_integrity_iter *iter)
{
- sd_dif_type3_generate(bix, sd_dif_crc_fn);
+ sd_dif_type3_generate(iter, sd_dif_crc_fn);
+ return 0;
}
-static void sd_dif_type3_generate_ip(struct blk_integrity_exchg *bix)
+static int sd_dif_type3_generate_ip(struct blk_integrity_iter *iter)
{
- sd_dif_type3_generate(bix, sd_dif_ip_fn);
+ sd_dif_type3_generate(iter, sd_dif_ip_fn);
+ return 0;
}
-static int sd_dif_type3_verify(struct blk_integrity_exchg *bix, csum_fn *fn)
+static int sd_dif_type3_verify(struct blk_integrity_iter *iter, csum_fn *fn)
{
- void *buf = bix->data_buf;
- struct sd_dif_tuple *sdt = bix->prot_buf;
- sector_t sector = bix->sector;
+ void *buf = iter->data_buf;
+ struct sd_dif_tuple *sdt = iter->prot_buf;
+ sector_t seed = iter->seed;
unsigned int i;
__u16 csum;
- for (i = 0 ; i < bix->data_size ; i += bix->sector_size, sdt++) {
+ for (i = 0 ; i < iter->data_size ; i += iter->interval, sdt++) {
/* Unwritten sectors */
if (sdt->app_tag == 0xffff && sdt->ref_tag == 0xffffffff)
return 0;
- csum = fn(buf, bix->sector_size);
+ csum = fn(buf, iter->interval);
if (sdt->guard_tag != csum) {
printk(KERN_ERR "%s: guard tag error on sector %lu " \
- "(rcvd %04x, data %04x)\n", bix->disk_name,
- (unsigned long)sector,
+ "(rcvd %04x, data %04x)\n", iter->disk_name,
+ (unsigned long)seed,
be16_to_cpu(sdt->guard_tag), be16_to_cpu(csum));
return -EIO;
}
- buf += bix->sector_size;
- sector++;
+ buf += iter->interval;
+ seed++;
}
return 0;
}
-static int sd_dif_type3_verify_crc(struct blk_integrity_exchg *bix)
-{
- return sd_dif_type3_verify(bix, sd_dif_crc_fn);
-}
-
-static int sd_dif_type3_verify_ip(struct blk_integrity_exchg *bix)
-{
- return sd_dif_type3_verify(bix, sd_dif_ip_fn);
-}
-
-static void sd_dif_type3_set_tag(void *prot, void *tag_buf, unsigned int sectors)
+static int sd_dif_type3_verify_crc(struct blk_integrity_iter *iter)
{
- struct sd_dif_tuple *sdt = prot;
- u8 *tag = tag_buf;
- unsigned int i, j;
-
- for (i = 0, j = 0 ; i < sectors ; i++, j += 6, sdt++) {
- sdt->app_tag = tag[j] << 8 | tag[j+1];
- sdt->ref_tag = tag[j+2] << 24 | tag[j+3] << 16 |
- tag[j+4] << 8 | tag[j+5];
- }
+ return sd_dif_type3_verify(iter, sd_dif_crc_fn);
}
-static void sd_dif_type3_get_tag(void *prot, void *tag_buf, unsigned int sectors)
+static int sd_dif_type3_verify_ip(struct blk_integrity_iter *iter)
{
- struct sd_dif_tuple *sdt = prot;
- u8 *tag = tag_buf;
- unsigned int i, j;
-
- for (i = 0, j = 0 ; i < sectors ; i++, j += 2, sdt++) {
- tag[j] = (sdt->app_tag & 0xff00) >> 8;
- tag[j+1] = sdt->app_tag & 0xff;
- tag[j+2] = (sdt->ref_tag & 0xff000000) >> 24;
- tag[j+3] = (sdt->ref_tag & 0xff0000) >> 16;
- tag[j+4] = (sdt->ref_tag & 0xff00) >> 8;
- tag[j+5] = sdt->ref_tag & 0xff;
- BUG_ON(sdt->app_tag == 0xffff || sdt->ref_tag == 0xffffffff);
- }
+ return sd_dif_type3_verify(iter, sd_dif_ip_fn);
}
static struct blk_integrity dif_type3_integrity_crc = {
.name = "T10-DIF-TYPE3-CRC",
.generate_fn = sd_dif_type3_generate_crc,
.verify_fn = sd_dif_type3_verify_crc,
- .get_tag_fn = sd_dif_type3_get_tag,
- .set_tag_fn = sd_dif_type3_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};
.name = "T10-DIF-TYPE3-IP",
.generate_fn = sd_dif_type3_generate_ip,
.verify_fn = sd_dif_type3_verify_ip,
- .get_tag_fn = sd_dif_type3_get_tag,
- .set_tag_fn = sd_dif_type3_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};
return;
/* Enable DMA of protection information */
- if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP)
+ if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) {
if (type == SD_DIF_TYPE3_PROTECTION)
blk_integrity_register(disk, &dif_type3_integrity_ip);
else
blk_integrity_register(disk, &dif_type1_integrity_ip);
- else
+
+ disk->integrity->flags |= BLK_INTEGRITY_IP_CHECKSUM;
+ } else
if (type == SD_DIF_TYPE3_PROTECTION)
blk_integrity_register(disk, &dif_type3_integrity_crc);
else
"Enabling DIX %s protection\n", disk->integrity->name);
/* Signal to block layer that we support sector tagging */
- if (dif && type && sdkp->ATO) {
+ if (dif && type) {
+
+ disk->integrity->flags |= BLK_INTEGRITY_DEVICE_CAPABLE;
+
+ if (!sdkp)
+ return;
+
if (type == SD_DIF_TYPE3_PROTECTION)
disk->integrity->tag_size = sizeof(u16) + sizeof(u32);
else
phys = hw_sector & 0xffffffff;
__rq_for_each_bio(bio, rq) {
+ struct bio_integrity_payload *bip = bio_integrity(bio);
struct bio_vec iv;
struct bvec_iter iter;
unsigned int j;
/* Already remapped? */
- if (bio_flagged(bio, BIO_MAPPED_INTEGRITY))
+ if (bip->bip_flags & BIP_MAPPED_INTEGRITY)
break;
- virt = bio->bi_integrity->bip_iter.bi_sector & 0xffffffff;
+ virt = bip_get_seed(bip) & 0xffffffff;
- bip_for_each_vec(iv, bio->bi_integrity, iter) {
+ bip_for_each_vec(iv, bip, iter) {
sdt = kmap_atomic(iv.bv_page)
+ iv.bv_offset;
kunmap_atomic(sdt);
}
- bio->bi_flags |= (1 << BIO_MAPPED_INTEGRITY);
+ bip->bip_flags |= BIP_MAPPED_INTEGRITY;
}
}
phys >>= 3;
__rq_for_each_bio(bio, scmd->request) {
+ struct bio_integrity_payload *bip = bio_integrity(bio);
struct bio_vec iv;
struct bvec_iter iter;
- virt = bio->bi_integrity->bip_iter.bi_sector & 0xffffffff;
+ virt = bip_get_seed(bip) & 0xffffffff;
- bip_for_each_vec(iv, bio->bi_integrity, iter) {
+ bip_for_each_vec(iv, bip, iter) {
sdt = kmap_atomic(iv.bv_page)
+ iv.bv_offset;
git.samba.org / sfrench / cifs-2.6.git / blobdiff